.TH std::chrono::utc_clock::from_sys 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::chrono::utc_clock::from_sys \- std::chrono::utc_clock::from_sys

.SH Synopsis
   template< class Duration >

   static std::chrono::utc_time<std::common_type_t<Duration,              \fI(since C++20)\fP
   std::chrono::seconds>>

       from_sys( const std::chrono::sys_time<Duration>& t );

   Converts a sys_time t to a utc_time u that represents the same point in time.

   u.time_since_epoch() - t.time_since_epoch() is equal to the number of leap seconds
   that was inserted between t and 1 January 1970. If t is the exact date of a leap
   second insertion, that leap second is counted as inserted.

.SH Return value

   A utc_time representing the same point in time as t.

.SH See also

   to_sys     converts utc_time to sys_time
   \fB[static]\fP   \fI(public static member function)\fP
   clock_cast convert time points of one clock to another
   (C++20)    \fI(function template)\fP
